From 42dc18ddfc9bcc39707f87e6d9c739c2f924f2dd Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Fri, 30 Nov 2018 20:43:25 -0800
Subject: [PATCH] Avoid exiting when cmd is not found

---
 book/build.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/book/build.sh b/book/build.sh
index 012607fa00..07d5aef1e6 100755
--- a/book/build.sh
+++ b/book/build.sh
@@ -16,8 +16,10 @@ maybe_cargo_install() {
     crate=$cmd
   fi
 
+  set +e
   "$cmd" --help > /dev/null 2>&1
   declare exitcode=$?
+  set -e
   if [[ $exitcode -ne 0 ]]; then
     _ cargo install "$crate"
   fi